JAK Inhibitors for Alopecia Areata: Olumiant, Litfulo, and Leqselvi Compared
Alopecia areata — an autoimmune condition causing patchy hair loss — now has three FDA-approved JAK inhibitor treatments, a genuinely new category of options for a condition that had limited approved treatments for decades. Here's how Olumiant, Litfulo, and Leqselvi compare.
What JAK inhibitors actually do
Alopecia areata occurs when the immune system attacks hair follicles. JAK (Janus kinase) inhibitors work by blocking specific immune signaling pathways involved in that attack, which is a fundamentally different mechanism than minoxidil or finasteride — those target hair growth and DHT respectively, not autoimmune activity.
The three options compared
| Medication | Approval | Format |
|---|---|---|
| Olumiant (baricitinib) | First JAK inhibitor approved for alopecia areata | Oral, once daily |
| Litfulo (ritlecitinib) | Approved for ages 12+ | Oral, once daily |
| Leqselvi (deuruxolitinib) | More recent approval | Oral, twice daily |
All three require ongoing monitoring given their effect on immune function — this is a meaningfully different risk and monitoring profile than topical minoxidil or oral finasteride, appropriate specifically for alopecia areata rather than androgenetic (pattern) hair loss.
Sesame Care From $15/consult
Licensed physicians who can evaluate whether your hair loss pattern fits alopecia areata versus androgenetic alopecia, and discuss appropriate treatment.
Care Bare Rx From consult
Physician-supervised evaluation and treatment coordination for diagnosed hair loss conditions.
Visit Care Bare Rx →Paid linkWho this actually applies to
These medications are specifically for alopecia areata — patchy, often sudden hair loss with an autoimmune basis — not for typical male or female pattern hair loss. If your hair loss looks like distinct round patches rather than gradual thinning or a receding hairline, that distinction matters for which treatment category is actually appropriate.
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